invasion where the woman was sexually assaulted. park regency used to have one security guard on duty, but management hired a few more guards after the last of three assaults. they posted flyers warning residents about the incident in june. latest last night happened at 6:00 p.m. the woman told the sheriff's office that she was attacked in her apartment. the spoke man said the man followed the woman through the gates and followed her to her apartment and assaulted her. if the man is accused of three other assaults is still behind bars, who is responsible for the latest? >> i thought they caught the guy and it was all okay. i guess it is not. >> reporter: this is the man still behind bars in connection with the three other assaults at park regency. antonio mutan. his family and girlfriend claim he is innocent, but dna testing linked mutan linked him to a rape this as you will r summer -- rape this summer. reporting live from walnut creek, jade hernandez, ktvu channel 2 news. >>> investigators are looking for a cause of a fire in bay point. this happened at the bay point bart station.